In the UK, during 18th and 19th centuries cholera killed more than 21000 people and there were common epidemics throughout the 19th century. Cholera is a disease caused by bacteria which create watery diarrhea and it can lead to death. In the 19th century, Cholera was one of the most common diseases in the world and many people were killed by cholera. In 1838, John Snow was a member of the Royal College of surgeons. In the 19th century, Cholera was the most second common bacterial infection came to London in 1848. Physician John Snow study of the outbreak and he find out that dirty water spread cholera not air. He took a simple action of removing the handle of the water pump and thus prevented further spread of the disease. This affected the
